function queryByLayerIndex(layerIndex) {
    //1、初始化查询结构对象，设置查询结构包含几何信息
    var queryStruct = new Zondy.Service.QueryFeatureStruct();
    //是否包含几何图形信息
    queryStruct.IncludeGeometry = true;
    //是否包含属性信息
    queryStruct.IncludeAttribute = true;
    //是否包含图形显示参数
    queryStruct.IncludeWebGraphic = false;
    //实例化查询参数对象
    var queryParam = new Zondy.Service.QueryParameter({
        resultFormat: "json",
        struct: queryStruct
    });
    //设置查询分页号
    queryParam.pageIndex = 0;
    //设置查询要素数目
    queryParam.recordNumber = 100;
    //实例化地图文档查询服务对象
    var queryService = new Zondy.Service.QueryDocFeature(queryParam, '地图文档', layerIndex, {

    });
    //执行查询操作，querySuccess为查询回调函数
    return new Promise((resolve) => {
        queryService.query(data => {
            var format = new Zondy.Format.PolygonJSON();
            //将MapGIS要素JSON反序列化为ol.Feature类型数组
            var features = format.read(data);
            resolve(features);
        });
    })
}